# Ultrapure Blue Thermally Activated Delayed Fluorescence Molecules: Efficient HOMO–LUMO Separation by the Multiple Resonance Effect

“Ultrapure Blue Thermally Activated Delayed Fluorescence Molecules: Efficient HOMO–LUMO Separation by the Multiple Resonance Effect” (2016), by Takuji Hatakeyama et al. Engineering research paper. Original abstract below, unchanged. No free PDF was found.

- Authors: Takuji Hatakeyama, K. Shiren, Kiichi Nakajima, Shintaro Nomura, Soichiro Nakatsuka, Keisuke Kinoshita, Jingping Ni, Yohei Ono, Toshiaki Ikuta
- Published: February 11, 2016
- Field: Engineering
- DOI: https://doi.org/10.1002/adma.201505491
- Source: https://doi.org/10.1002/adma.201505491

## Abstract

Ultrapure blue-fluorescent molecules based on thermally activated delayed fluorescence are developed. Organic light-emitting diode (OLED) devices employing the new emitters exhibit a deep blue emission at 467 nm with a full-width at half-maximum of 28 nm, CIE coordinates of (0.12, 0.13), and an internal quantum efficiency of ≈100%, which represent record-setting performance for blue OLED devices.

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